gistfile1.txt

server_name "~^(?P<app_group>\w+)?(?:\.)?(?P<app_name>\w+)-(?P<app_port>\d{4})\.devel$";
    root /work/$app_name/public;
    location / {
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;

        proxy_pass http://127.0.0.1:$app_port;

        proxy_redirect http://127.0.0.1:$app_port /;
        proxy_redirect http://localhost:$app_port /;
    }
 }